<?php



/**

 * 针对Mht格式的文件进行解析

 * 使用例子:

 *

 * function mhtmlParseBody($filename) {



if (file_exists ( $filename )) {

if (is_dir ( $filename )) return false;



$filename = strtolower ( $filename );

if (strpos ( $filename, '.mht', 1 ) == FALSE) return false;





$o_mhtml = new mhtml ();

$o_mhtml->set_file ( $filename );

$o_mhtml->extract ();

return $o_mhtml->get_part_to_file(0);



}

return null;

}



function mhtmlParseAll($filename) {



if (file_exists ( $filename )) {

if (is_dir ( $filename )) return false;



$filename = strtolower ( $filename );

if (strpos ( $filename, '.mht', 1 ) == FALSE) return false;





$o_mhtml = new mhtml ();

$o_mhtml->set_file ( $filename );

$o_mhtml->extract ();

return $o_mhtml->get_all_part_file();



}

return null;

}

 */



class Change {



    var $file = '';

    var $boundary = '';

    var $filedata = '';

    var $countparts = 1;

    var $log = '';



    function extract() {

        $this->read_filedata ();

        $this->file_parts ();



        return 1;

    }



    function set_file($p) {

        $this->file = $p;

    }



    function get_log() {

        return $this->log;

    }



    function file_parts() {

        $lines = explode ( "\n", substr ( $this->filedata, 0, 8192 ) );

        foreach ( $lines as $line ) {

            $line = trim ( $line );

            if (strpos ( $line, '=' ) !== FALSE) {

                if (strpos ( $line, 'boundary', 0 ) !== FALSE) {

                    $range = $this->getrange ( $line, '"', '"', 0 );

                    $this->boundary = "--" . $range ['range'];

                    $this->filedata = str_replace ( $line, '', $this->filedata );

                    break;

                }

            }

        }

        if ($this->boundary != '') {

            $this->filedata = explode ( $this->boundary, $this->filedata );

            unset ( $this->filedata [0] );

            $this->filedata = array_values ( $this->filedata );

            $this->countparts = count ( $this->filedata );

        } else {

            $tmp = $this->filedata;

            $this->filedata = array (

                $tmp

            );

        }

    }



    function get_all_part_file() {

        return $this->filedata;

    }



    function get_part_to_file($i) {

        $line_data_start = 0;

        $encoding = '';

        $part_lines = explode ( "\n", ltrim ( $this->filedata [$i] ) );

        foreach ( $part_lines as $line_id => $line ) {

            $line = trim ( $line );

            if ($line == '') {

                if (trim ( $part_lines [0] ) == '--')

                    return 1;

                $line_data_start = $line_id;

                break;

            }

            if (strpos ( $line, ':' ) !== FALSE) {

                $pos = strpos ( $line, ':' );

                $k = strtolower ( trim ( substr ( $line, 0, $pos ) ) );

                $v = trim ( substr ( $line, $pos + 1, strlen ( $line ) ) );

                if ($k == 'content-transfer-encoding') {

                    $encoding = $v;

                }

                if ($k == 'content-location') {

                    $location = $v;

                }

                if ($k == 'content-type') {

                    $contenttype = $v;

                }

            }

        }



        foreach ( $part_lines as $line_id => $line ) {

            if ($line_id <= $line_data_start)

                $part_lines [$line_id] = '';

        }



        $part_lines = implode ( '', $part_lines );

        if ($encoding == 'base64')

            $part_lines = base64_decode ( $part_lines );

        elseif ($encoding == 'quoted-printable')

            $part_lines = imap_qprint ( $part_lines );



        return $part_lines;

    }



    function read_filedata() {

        $handle = fopen ( $this->file, 'r' );

        $this->filedata = fread ( $handle, filesize ( $this->file ) );

        fclose ( $handle );

    }



    function getrange(&$subject, $Beginmark_str = '{', $Endmark_str = '}', $Start_pos = 0) {

        /*

         * $str="sssss { x { xx } {xx{xx } x} x} sssss"; $range=string::getRange($str,'{','}',0); echo $range['range'];

         //tulem: " x { xx } {xx{xx } x} x" echo $range['behin'];

         //tulem: 6 echo $range['end'];

         //tulem: 30 (' ') -- l5pumÃ¤rgist jÃ¤rgnev out: array('range'=>$Range,'begin'=>$Begin_firstOccurence_pos,'end'=>$End_sequel_pos) |

         false v1.1 2004-2006,Uku-Kaarel J5esaar,ukjoesaar@hot.ee,http://www.php.cn/,+3725110693

         */

        if (empty ( $Beginmark_str ))

            $Beginmark_str = '{';

        $Beginmark_str_len = strlen ( $Beginmark_str );



        if (empty ( $Endmark_str ))

            $Endmark_str = '}';

        $Endmark_str_len = strlen ( $Endmark_str );



        /* $Start_pos_cache = 0; */

        do {

            /* !algus */

            if (! is_int ( $Begin_firstOccurence_pos ))

                $Start_pos_cache = $Start_pos;



            /* ?algus-test */

            $Start_pos_cache = @strpos ( $subject, $Beginmark_str, $Start_pos_cache );



            /* this is possible start for range */

            if (is_int ( $Start_pos_cache )) {

                /* skip */

                $Start_pos_cache = ($Start_pos_cache + $Beginmark_str_len);

                /* test possible range start pos */

                if (is_int ( $Begin_firstOccurence_pos )) {

                    if ($Start_pos_cache < $range_end_pos)

                        $rangeClean = 0;

                    elseif ($Start_pos_cache > $range_end_pos)

                        $rangeClean = 1;

                }

                /* here it is */

                if (! is_int ( $Begin_firstOccurence_pos ))

                    $Begin_firstOccurence_pos = $Start_pos_cache;

            } /* VIGA NR 0 ALGUST EI OLE */



            if (! is_int ( $Start_pos_cache )) {

                /* !algus */

                /* VIGA NR 1 ALGUSMARKI EI LEITUD : VIIMANE VOIMALIK ALGUS */

                if (is_int ( $Begin_firstOccurence_pos ) and ($Start_pos_cache < $range_end_pos))

                    $rangeClean = 1;

                else

                    return false;

            }

            if (is_int ( $Begin_firstOccurence_pos ) and ($rangeClean != 1)) {

                if (! is_int ( $End_pos_cache ))

                    $End_sequel_pos = $Begin_firstOccurence_pos;



                $End_pos_cache = strpos ( $subject, $Endmark_str, $End_sequel_pos );



                /* ok */

                if (is_int ( $End_pos_cache ) and ($rangeClean != 1)) {

                    $range_current_lenght = ($End_pos_cache - $Begin_firstOccurence_pos);

                    $End_sequel_pos = ($End_pos_cache + $Endmark_str_len);

                    $range_end_pos = $End_pos_cache;

                }

                /* VIGA NR 2 LOPPU EI LEITUD */

                if (! is_int ( $End_pos_cache ))

                    if ($End_pos_cache == false)

                        return false;

            }

        } while ( $rangeClean < 1 );



        if (is_int ( $Begin_firstOccurence_pos ) and is_int ( $range_current_lenght ))

            $Range = substr ( $subject, $Begin_firstOccurence_pos, $range_current_lenght );

        else

            return false;



        return array (

            'range' => $Range,

            'begin' => $Begin_firstOccurence_pos,

            'end' => $End_sequel_pos

        );

    } // end getrange()

} // class

?>
